Dramatic cell phone video captured Houston police officers using a bean bag gun to subdue a man wielding a knife Tuesday morning. The man apparently told officers he had killed "the entire north side of Houston."

On the video, you can hear onlookers yelling "Oh my God" as the man flung a knife on Rusk, right in front of the Club Quarters Hotel. Moments later officers deployed the bean bag gun at least three times.

Carlos Garcia, a construction worker, captured the video.

"He got on the floor and he kept waving that knife around and then they Tasered him," said Garcia, who was at a work site near the incident around 6 am.

"We tried talking to him. We eventually had to deploy a soft impact weapon as well as multiple CED's (Taser)," HPD Officer Curtis Hampton said.

Hampton said they believe the man was suffering from delusions.

The restraint shown by HPD officers was praised by both eyewitnesses and the new police chief.

"The use of deadly force should be a last option," said Chief Art Acevedo. "It should not be your first option."